<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    let str = "abc";
    let [e, f] = str;
    console.log(e, f); // a, b
    
    let nub = 123;
    let [c, d] = nub;
    console.log(c, d); // Uncaught TypeError: nub is not iterable
</script>
</body>
</html>
